Click on the third or sixth rank to set the en passant target square.

EGTB: win in 2 half-moves

# move score
1 Rg5 win in 1 half-moves
2 Rc8 draw
3 Kf1 loss in 2 half-moves
4 Kf2 loss in 2 half-moves
5 Kf3 loss in 2 half-moves
6 Kg3 loss in 2 half-moves
7 Kgg1 loss in 2 half-moves
8 Kgh2 loss in 2 half-moves
9 Kh3 loss in 2 half-moves
10 Khg1 loss in 2 half-moves
11 Khh2 loss in 2 half-moves
12 Ra8 loss in 2 half-moves
13 Rb8 loss in 2 half-moves
14 Rd8 loss in 2 half-moves
15 Re8 loss in 2 half-moves
16 Rf8 loss in 2 half-moves
17 Rg3 loss in 2 half-moves
18 Rg4 loss in 2 half-moves
19 Rg6 loss in 2 half-moves
20 Rg7 loss in 2 half-moves
21 Rh8 loss in 2 half-moves